diff --git a/.github/workflows/prod.yml b/.github/workflows/prod.yml
index 828686a..3e8d853 100644
--- a/.github/workflows/prod.yml
+++ b/.github/workflows/prod.yml
@@ -4,6 +4,10 @@ on:
   push:
     branches:
       - master
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+      - 'v[0-9]+.[0-9]+.[0-9]-alpha[0-9]+'
+      - 'v[0-9]+.[0-9]+.[0-9]-beta[0-9]+'
   workflow_dispatch:
 
 jobs:
@@ -36,4 +40,4 @@ jobs:
           push: true
           tags: |
             smartenergyplatform/smart-meter-dc:prod
-            ghcr.io/senergy-platform/smart-meter-dc:prod
\ No newline at end of file
+            ghcr.io/senergy-platform/smart-meter-dc::${{ github.ref_name }}
\ No newline at end of file
diff --git a/Modfile.yaml b/Modfile.yaml
index 33b5cb4..782a570 100644
--- a/Modfile.yaml
+++ b/Modfile.yaml
@@ -2,13 +2,13 @@ modfileVersion: "v1"
 id: github.com/SENERGY-Platform/mgw-smart-meter-dc
 name: Smart Meter Device Connector
 description: 
-version: v1.0.7
+version: v1.0.8
 type: add-on
 deploymentType: single
 services:
   connector:
     name: Connector
-    image: ghcr.io/senergy-platform/smart-meter-dc:prod
+    image: ghcr.io/senergy-platform/smart-meter-dc:v1.0.8
   
 dependencies:
   github.com/SENERGY-Platform/mgw-mqtt-broker:
diff --git a/smart_meter/discovery.py b/smart_meter/discovery.py
index 33bff92..56ad737 100644
--- a/smart_meter/discovery.py
+++ b/smart_meter/discovery.py
@@ -45,12 +45,14 @@ def probe_ports(ports: list) -> list:
     smart_meters = list()
     for port in ports:
         try:
+            logger.debug(f"try readiing from device {port}")
             srl_adptr = SerialAdapter(port)
             mfr_id, sm_id = srl_adptr.identify()
             if mfr_id and sm_id:
                 logger.info("found smart meter '{}' with id '{}' on '{}'".format(mfr_id, sm_id, port))
                 smart_meters.append(("{}{}".format(conf.Discovery.device_id_prefix, sm_id), mfr_id, srl_adptr))
-        except ReadError:
+        except ReadError as e:
+            logger.error("cant read from serial '{}'".format(e))
             pass
     return smart_meters